Nearly half of the Mongolian population lead a nomadic lifestyle and live in gers - felt covered tents - that can be easily moved from one place to another. We too slept in gers. This one is by the Terkhiin Tsagaan Lake:
Typically, the door of the ger faces south:
You can also find a "ger motel" like this one in the Gobi desert:
Mongolian people are quite friendly and very, very hospitable: just knock on a ger door and soon you'll have a place to stay and some food in your stomach.